water-meter 
6845 
Water-raeters. 
A. a, case ;*.*', inlet and outlet : c, hard rubber rotating piston ; d, 
ffyrating spindle which drives the registering mechanism e, by means 
of a connection (not shown) ; /, dial. 
B. a, a', case, composed of two cylinders cast integrally: *, one of 
the two plungers; c. valve actuated by *, controlling the flow into and 
out of the cylinder a. A similar valve in a controls the How into and 
outofd', and in this way the plunger in each cylinder governs the flow 
into and out of the other. '1 he plungers are hollow, and have very 
nearly the specific gravity of water. Their reciprocations, through a 
connection (not shown), drive the registering mechanism rf. The miet 
(not shown) is opposite the outlet e. 
of water evaporated in a giveu time, as from a 
steam-boiler. 
water-milfoil (wa't^r-mil'foil), «. See mil- 
foit. 
water-mill (wa't6r-mil), )i. A rail! wliose ma- 
chinery is driven by water. 
There are In this CUie 200. Scliooles, 200. Innes, 400. wa- 
ter^miles, 600. water-Conduits, 700. Temples and Oratories. 
Capt. John Smith, Works, I. 47. 
water-mint (wa'ttr-mint), «. The bergamot- 
miut, Mentha nquatica, an herb of wet places in 
Europe and Asiatic Russia, naturalized in other 
localities, growing sparingly in the eastern 
United States. It affords a perfumers' oil. 
The water-mint or brook-mint of early usage 
wag il. sylrestiis. See mhifl. 
Thoae which perfume the air most delightfully, not 
passed by as the rest, but beiuK trodden upon and crushed, 
are three — that la, bumet, wild thymt-, and water-mintx. 
Bacon, Gardens (ed. 1887). p. 444. 
water-mite (wa't^r-mit), «. Any mite of the 
family Hydrachnidm ; a water-tick. See ////- 
drachnidss, and cut under Hydrachna. ALso 
called water-spider. 
water-moccasin (wa'ter-mok'a-sin), K. A 
water-adder: a name applied with little dis- 
crimination in the United States to several 
species of aquatic snakes; properly, the veno- 
mous Tozicophis or Anci-itrodon piscivoriis. with 
which the harmless Tropidonotiis (or Xerodia) 
Mpedon is sometimes confounded. See tcolrr- 
unakc. and cut under moccagiii. 
water-mole (wa't^r-mol), ». 1. A desman; 
a member of the genus ilyognle. See cut un- 
der desman. — 2. The duck-mole, or duck-billed 
platypus, Ornithorhynchns paradoxHK. See cut 
under duetclnll. 
water-monitor (wa,'t6r-mon''i-tpr), «. A large 
water-lizard of the family Mn'nitoridfe or Vii- 
rnnidse; any aquatic monitor, or varan. One of 
the liest.know"n Is the Indian kabarajcoya. or twohandeil 
monitor, MoniUfr or Varanujt italvaUrr, attaining a length 
of 5 or 8 feet See cut under Ilydrotaurm. 
water-monkey (wa't^r-mung'ki), «. A globu- 
lar vessel with a straight upright neck, com- 
monly of earthenware, used in tropical coun- 
tries for holding water. 
water-moss ( wa'ter-mAs), n. A moss of the ge- 
nus I'ontituilis (which see). 
water-moth (wa'ter-mdth), n. A cadilis-fly: 
so called from its aquatic habits and resem- 
blance to a moth. See cut under ciiddia-worm. 
Every aood disciple of Walton and lover of the "gentle 
art" knows the value of the caddice-fly or vater-w/)th as 
bait RUey, 5th Mo. Ent. Rep., p. la 
water-motor (wa'ter-mo'tor), II. Any water- 
wheel or turbine; in a narrower and the more 
common sense, any form of small motor using 
water under pressure, an<l serving to drive light 
machinery, such as printing-presses and sewing- 
machines. Such motors arc made in the form of over- 
shot wheels Inclosed In a casirig, reciprocatinij pistons in 
cylinders, an<l rotary etiKlnt!*. Another form is a sniiill 
turbine designed to be fitted to a (iomnion Inmse supply- 
pipe. .Small engines with oscillating cylinders are also 
430 
Water-motor. 
ff, case supported on legs; l>, gate-valve for regulating flow; r, 
buckets or floats attached to the outer margin of a dislc keyed to the 
shaft of the band-wheel /. The buckets f play in an annular en- 
largement e of the case as they receive the impact of the stream 
flowing through h. The water is <iischarged at rf. 
used. Another form, employing the pressure of a large 
body of water to raise a smaller quantity, is called a wa- 
ter-presmre pump, but is essentially a water-motor nsed 
as a pump. 
water-mouse (wa't^r-mous), n. An Austra- 
lian murine rodent of the genus Hijdromys and 
subfamily Hydroiiiyin^. See cut under beaver- 
rat — WMte-bellled water-mouse. .See white-bellied. 
—Yellow-bellied water-mouse. See yeltow-bellied. 
water-murrain (wa'tSr-mur'an), n. A disease 
among cattle, 
water-net (wa'ter-uet), II. See Uydrodictijoii. 
water-newt (wa'tfer-niit), II. An aquatic newt; 
a triton. See cuts under newt and axolotl. 
water-nixy (wa'ttr-nik"si), II. [After G. was- 
sernixe; < tcater + nix^.'\ A water-spirit; an 
elf inhabiting the water. 
The shallowness of a uyaternixif'x soul may tiave a 
eharm until she becomes didactic. 
George Eliot, Middlemarch, Ixiv. 
water-nut (wa'ter-nut), II. The large edible 
seed of plants of the genus Trapa, or the plant 
itself: also called .Sin(//'or« n«^. See cut under 
Trapa. 
water-nymph (wa'ter-niinf), /(. 1. A Naiad.— 
2. A plant of the genus A'oi'a.v. — 3. The water- 
lily, Ca.st^ilia (Xymjthsea). 
water-oak (wa'ter-6k), K. 1. In hot., an oak, 
Quercus aqiiatiea, of the southern United States, 
most common antl bestdeveloped along streams 
in the eastern Gulf States. Its wood is heavy, 
hard, and coarse-grained, and does not appear 
to be used except for fuel. Also duck--,jiosKiim-, 
ov piiiil--oal: — 2. Same an pin-oak: 
water-oats (wa'ter-6ts), II. pi. See Indian 
rice (a), under /■/(•«!. 
water-opossum (wa'tt''r-9-pos"um), H. The 
South American yapok. See cut under yapok. 
water-ordeal (vva'ter-6r"de-al), ». See ordeal,!. 
water-organ (W!i't6r-6r"gan), n. See hydraulic 
orijiin, under oryaii^. 
water-ouzel (Wa't6r-o"zl), n. See ouzel. 
water-oven (wa'ter-uv'n), n. In clieni., an 
oven surrounded on all sides but tlie front or 
top with a chamber of boiling water oi' steam, 
used for drying chemical preparations, etc. 
water-ox (wa'ter-oks),H.; pi. irofer-oj;eH(-oks"n). 
The water-cow. 
Water-ox^n turned up their noses at us. 
LitteU'g Living Age, CLXI. 88. 
water-padda (wa'ter-pad"a), »i. A South Af- 
rican toad, lirericeps i/ibbosit.'i. 
water-pang (wa'ti?r-pang), n. Pyrosis. 
water-parsley (wa't^r-pars"li), n. 1. One 
of several water-loving umbelliferous plants. 
[Eng.] — 2. See IlirhardKonia. 
water-parsnip (wa'ttT-pars"nip), «. A plant 
of the genus Hiiiiii, especially S. latifoliiim. See 
cut under .skirret. 
water-parting (wa'ter-piir'ting), «. Same as 
umtershed. 
The bitih land which forms the divisional line between 
two contiguous river-basins is called the water-parting. 
Instead of ri-aler-jxirting some writers employ the term 
waterslied. Huxley, Physiography, p. 18. 
water-partridge (wa'ter-par"trij), n. The rud- 
dy duck, Krismatura riibidii. G. Trumbull, 1888. 
See cut under Krixmatnrii. [Patu.\ent river, 
Maryland.] 
water-passage (wa'ter-paK"gj), /(. A passage 
for water: specifically, the urethra, 
water-pennywort ( vva't(''r-])eii"i-w(Tt), «, Same 
as iiiiirsh-jiiiiiiyirorf. 
water-pepper(vva't(-r-pep"er),H, 1. Thesmart- 
w(.>ed, I'ohifiDiiiiiii Ilydrojiijiir. The mild water- 
pei)per is /'. hydropijieroidis. — 2. Same as toa- 
teririirt. 1. 
water-pore 
Water-persicaria (wa'ter-per-si-ka'ri-a), H. 
See persicaria. 
water-pewit (wa'ter-pe"wit), n. See pexcit (<■) 
and Sayornis. 
water-pheasant (wa'ter-fez"ant), k. 1. The 
Chinese jacana, Hydrophasian'us chiruryus. See 
cut under Hydrophasianu.s. — 2. The pintail or 
a congeneric duck, having a long tail. See 
pheamnt{d) (5), anci cut under -D«//«. — 3. The 
goosander, Mergus merganser ; also, the hooded 
merganser, Lophodytes cucuUatus. 
waterphone (wa'ter-fon), n. [IiTeg. < loater + 
Gr. ijiLivt], voice, sound, simulating telephone.'] 
An instrument for observing the flow of water 
in pipes and the detection of leaks, when the 
pipes are laid underground or in other inac- 
cessible places. A common form consists of a metal- 
lic diaphragm arranged in an car-trumpet after a manner 
analogous to a telephone receiver, and having a slender 
rod of steel connected with the diaphragm in such a way 
as not to touch the trumpet. In use the free end of the 
rod is placed upon the pipe to be examined, and the ear, 
placed at tl)e trumpet, is tlms enabled to hear distinctly 
sounds that, witliout this device, would be entirely in- 
audible, 
water-piet (wa'ter-pi"et), H. The water-ouzel 
or dipper, Cinclus aquaticus. Also water-pyet. 
See cut under rfy>|)er. Montagu. [Prov. Eng.] 
water-pig (wa'ter-pig), n. 1. A porpoise. — 2. 
The capibara (which see, with cut). — 3. A fish, 
the gourami. 
water-pillar (wa'ter-pil'ar), «. 1+. A water- 
spout. — 2. On a railroad, an upright pipe with 
a swinging hollow arm or gooseneck, placed 
beside the track for supplying water to loco- 
motives; a water-crane. 
water-pimpernel (wa't^r-pim"per-nel), n. 
See pimpernel. 
water-pine (wa'ter-pin), )(. See jiinc^. 
water-pipe (wa'tfer-pip), ». [< ME. water-pipe; 
< water + pipe.] 1. A pipe for conveying wa- 
ter. Wrigli t, Vocabulary. 
Single I grew, like some green plant, whose root 
Creeps to the garden water-pipes beneath, 
Feeding the flower. Tennyson, Fair Women. 
2. A waterspout. [Ai'chaic] 
One deep calleth another, because of the noise of the 
water-pipes. Book of Common Prayer, Psalter, Ps. xlii. 9. 
water-pipit (wa'ter-pip"it), ». One of several 
species of Anthus which are common in various 
parts of Europe, especially that usually called 
A. aquaticus, also A. spinoletta, and more cor- 
rectly ./. spipoletta. See Anthus andjiipit. 
waterpitt, ". [ME. waterput, < AS. wieterpyt; as 
Kdter + /*(7i.] A pit of water. Treiisti, III. 40] . 
water-pitcher (wa't*r-pich"er), n. 1. A 
pitcher for holding water. — 2. A plant of the 
order Sarraceniaceee, including the common 
pitcher-plant or sidesaddle-flower. See cut un- 
der ^)i7f7(cr-2;/rt»t. 
water-plane ( wa'tfer-plan), «. In ship-buiUliiHj, 
a plane passing through a vessel when afloat, 
on a level with the surface of the water, when 
the vessel baa her stores and equipments only on board, 
such a plane is a light water-plaiis; when she is loadetl, it 
is a load water-pdane. Compare waU'r-line. 
water-plant (wa'ter-plant), H. A plant which 
grows in water; an aquatic plant. 
water-plantain (wa't6r-plan"tan), )(. A plant 
of the genus Alisma, chiefly A. I'lanttitio, the 
common or great water-j)lantain, gi'owing in 
shallow water throughout the temperate north- 
ern hemisphere, reappearing in Australia. Its 
leaves in form and arrangement suggest tliose of the com- 
mon plantain, hut are not ridgy ; the flowers are small and 
white-petaled, borne in an open panicle a foot or two long. 
A smaller species is A. ranvncutoi<le'< ; a floating species, 
A. natans; both are European. 
water-plate (wa'ter-pliit), n. A plate having 
a double bottom or a lining of different mate- 
rial, with a space left in which hot water can 
be put, to keep articles of food warm. 
This kind of dish fsentiment], above all, requires to be 
served ui> hot or sent o(f in water-pleites, that your friend 
may have it iilmost as warm as yourself. 
Lamb, Distant Correspondents. 
water-platter (wa'ter-plaf'er), 11. The royal 
water-lily, Fjcion'rt reyia: so named with refer- 
ence to its broad floating leaves with upturned 
margin. 
water-plow (wa't^r-plou), n. A machine for- 
merly used for taking mud, etc., out of rivers. 
HalHwell. 
water-poise (wa'ter-poiz), n. A hydrometer, 
or instrument for ascertaining the specific grav- 
ity of different liquids. 
water-pore (wa'ter-por), «. 1. In zoiil., the 
pore or orifice by which a water-tube of any 
water-vascular system opens to the exterior. — 
2. In bot., an aperture or pore in the epidermis 
